Sa1672 - Apc Gene Regulation by Mir-135A and Mir-135B in Sporadic Colorectal Cancer: In Silico Approach and Expression Analysis

2018 ◽  
Vol 154 (6) ◽  
pp. S-349
Author(s):  
Mumtaz Anwar ◽  
Rakesh Kochhar ◽  
Deepak Kaul ◽  
Alka Bhatia ◽  
Safrun Mahmood
Keyword(s):  
Colorectal Cancer ◽  
Gene Regulation ◽  
Expression Analysis ◽  
In Silico ◽  
Apc Gene ◽  
Sporadic Colorectal Cancer

APCI1307K Mutations and Forkhead Box Gene (FOXO1A): Another Piece of an Interesting Correlation

2012 ◽  
Vol 27 (1) ◽  
pp. 13-19 ◽  
Author(s):  
Marco Agostini ◽  
Chiara Bedin ◽  
Salvatore Pucciarelli ◽  
Mariavittoria Enzo ◽  
Marta Briarava ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Familial Adenomatous Polyposis ◽  
Ionic Species ◽  
Maldi Ms ◽  
Apc Gene ◽  
Sporadic Colorectal Cancer ◽  
Ionization Mass ◽  
Adenomatous Polyposis ◽  
Forkhead Box ◽  
Apc I1307k

Purpose Germline nonsense and frameshift mutations in the adenomatous polyposis coli (APC) gene are found in approximately 90% of individuals affected by familial adenomatous polyposis (FAP) and a genotype-phenotype relationship has been observed. Missense mutations have also been found in a few cases, even if their role in FAP is still unknown. An association between a missense mutation, APC I1307K, and the risk of sporadic colorectal cancer (CRC) has been reported. In order to improve the knowledge about the genetic effect of APC I1307K on the phenotype, we tried a new approach using matrix-assisted laser desorption/ionization mass spectrometry (MALDI/MS). Experimental design An APC mutation (I1307K) was found in an index case of a non-Jewish woman and her son with attenuated familial adenomatous polyposis (A-FAP) and no family history of cancer. In order to evaluate whether the presence and abundance of the ionic species are related to the presence of cancer or the presence of mutation, comparative analyses of 11 healthy clean-colon subjects, 59 patients with CRC (stage II n=19, stage III n=23, stage IV n=17) without polyps, and 9 FAP patients, carriers of a nonsense mutation in the APC gene, were evaluated. Results Comparative analysis of serum protein profiles of the index patient and her healthy son, FAP and sporadic CRC patients, and subjects with preneoplastic lesions showed a characteristic abundance of ionic species at m/z 905, which was not present in healthy controls. Two peptides were identified from MALDI/MS/MS spectra of m/z 905 belonging to the kininogen-1 precursor and the human forkhead box protein 01A (FOXO1A). FOXO1A was present in only two subjects carrying I1307K, but not in other patients. Conclusions Our findings seem to suggest a relationship between m/z 905, FOXO1A and the development and growth of colorectal cancer. FOXO1A fragment determination in serum with MALDI/MS might be a promising approach for early detection of colon carcinoma or for the development of targeted therapies.

Identification of BAP1-associated MicroRNAs and Implications in Cancer Development

2019 ◽  
pp. 1-4
Author(s):  
Tikam Chand ◽  
Tikam Chand
Keyword(s):  
Gene Regulation ◽  
In Silico ◽  
Mirna Target ◽  
Target Prediction ◽  
Differential Regulation ◽  
Cancer Development ◽  
Mirna Target Prediction ◽  
Cancer Types ◽  
In Silico Tools

Having role in gene regulation and silencing, miRNAs have been implicated in development and progression of a number of diseases, including cancer. Herein, I present potential miRNAs associated with BAP1 gene identified using in-silico tools such as TargetScan and Exiqon miRNA Target Prediction. I identified fifteen highly conserved miRNA (hsa-miR-423-5p, hsa-miR-3184-5p, hsa-miR-4319, hsa-miR125b-5p, hsa-miR-125a-5p, hsa-miR-6893-3p, hsa-miR-200b-3p, hsa-miR-200c-3p, hsa-miR-505-3p.1, hsa-miR-429, hsa-miR-370-3p, hsa-miR-125a-5p, hsa-miR-141-3p, hsa-miR-200a-3p, and hsa-miR-429) associated with BAP1 gene. We also predicted the differential regulation of these twelve miRNAs in different cancer types.

Clinicopathologic Features of Sporadic Colorectal Cancer with MLH1/MSH2 Loss of Expression - Reduced Likelihood of Metastases

2008 ◽  
Vol 24 (3) ◽  
pp. 175 ◽  
Author(s):  
Ji Won Park ◽  
Hee Jin Chang ◽  
Kyung Hae Jung ◽  
Dae Yong Kim ◽  
Dae Kyung Sohn ◽  
...  
Keyword(s):  
Colorectal Cancer ◽  
Sporadic Colorectal Cancer ◽  
Clinicopathologic Features

Biomarkers for Early Detection of Colitis-associated Colorectal Cancer - Current Concepts, Future Trends

2020 ◽  
Vol 22 (1) ◽  
pp. 137-145
Author(s):  
Tomasz Mackiewicz ◽  
Aleksander Sowa ◽  
Jakub Fichna
Keyword(s):  
Colorectal Cancer ◽  
Early Detection ◽  
Cancer Development ◽  
Sporadic Colorectal Cancer ◽  
Future Trends ◽  
Significant Progress ◽  
Current Standard ◽  
Risk Of Cancer ◽  
Histological Testing ◽  
Made In

: Colitis-associated colorectal cancer (CAC) remains a critical complication of ulcerative colitis (UC) with mortality of approximately 15%, which makes early CAC diagnosis crucial. The current standard of surveillance, with repetitive colonoscopies and histological testing of biopsied mucosa samples is burdensome and expensive, and therefore less invasive methods and reliable biomarkers are needed. Significant progress has been made thanks to continuous extensive research in this field, however no clinically relevant biomarker has been established so far. This review of the current literature presents the genetic and molecular differences between CAC and sporadic colorectal cancer and covers progress made in the early detection of CAC carcinogenesis. It focuses on biomarkers under development, which can be easily tested in samples of body fluids or breath and, once made clinically available, will help to differentiate between progressors (UC patients who will develop dysplasia) from non-progressors and enable early intervention to decrease the risk of cancer development.

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